Grayville, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Grayville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast25%—92°70°—
- SundayJul 5Overcast26%—86°72°-6°
- MondayJul 6Overcast21%—87°71°+1°
- TuesdayJul 7Overcast13%—83°68°-4°
- WednesdayJul 8Mostly Clear18%—86°66°+3°
- ThursdayJul 9Thunderstorm26%—90°71°+4°
- FridayJul 10Thunderstorm41%—84°72°-6°
AQI 46 (Good), driven by PM2.5. AQI down 5 over the last 6 hours (gradual decline). PM2.5 at 8.6 µg/m³ (AQI 48) with a 0.92 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 40 now. With UV 5.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 19 around 1 PM.
- Present
- AQI 40
- UV peak
- 5.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 19
PM × Wind × Precip
PM2.5 at 8.6 µg/m³ (AQI 48) with a 0.92 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.92
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:44 PM
- Moonset
- 10:00 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Grayville at a glance
- Today vs. normal: 8°F above the seasonal normal for this latitude
- Last frost: April 6 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 62844
16-Day Forecast — Grayville
- Sat92°70°25%
- Sun86°72°26%
- Mon87°71°21%
- Tue83°68°13%
- Wed86°66°18%
- Thu90°71°26%
- Fri84°72°41%
- Sat87°73°24%
- Sun76°64°11%
- Mon74°58°5%
- Tue78°61°5%
- Wed82°64°19%
- Thu82°66°20%
- Fri77°70°16%
- Sat85°71°29%
- Sun86°73°29%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Grayville
SPC has placed Grayville in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Grayville
- 62844